Radio Receiver The average (rms) voltage across the resistive load in Figure 2.18 varies as a function of frequency according to Equation (2-18).

where and is the frequency in hertz. Assume that L = 0.25 mH, C = 0.10 nF, R= 50 , and =10 mV

(a) Plot the rms voltage on the resistive load as a function of frequency. At what frequency does the voltage on the resitive load peak? What is the voltage on the load at this frequency? This frequency is called the resonant frequency of the circuit.

(b) If the frequency is changed to 10% greater than the resonant frequency, what is the voltage on the load? How selective is this radio receiver?

(c) At what frequencies will the voltage on the load drop to half of the voltage at the resonant frequency?